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2009-02 Sharetech MS6X20
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2009-02 ShareTech Mail Server 郵件MS6X20伺服器教育訓練簡報 Peter WWT
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2.
3.
4. ShareTech MS 5. ShareTech MS
6. MS-6015
7. MS-6020
8. MS-6120
9. MS-6220
10. MS-6320
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32. D omainN ameS erver
33. DNS
- Q: Domain name service) ?
34. DNS
- Fully Qualified Domain Name (FQDN)
35. DNS Root Domain Subdomains Second-Level Domain Top-Level
Domain FQDN: www.hnk.com.cn Host: www TW CN Root JP com sina hnk
nike www COM 36. DNS
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- http://www.root-servers.org / Root Server
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- Root ServerMirror ( f.root-servers.net )
37. Delegation
38. IP.tw - http://www.twnic.net.tw 39. Query
- Cache(non-authoritavtive answer)
40. vs
requesting host Peter.sharetech.com.tw giga.cs.test.tw 1 2 3 4 5
6 authoritative name server dns.cs.test.tw 7 8 iterated query
intermediate name server dns.test.tw local name server
Dns.sharetech.com.tw 41. (caching) ( ) (cache) (timeout) TTL (Time
to Live) Cache - - - , ( ) TTL - : - : (cached) 42. Resource
Records
- SOA Start Of Authority zone
43. NS (Name Server) 44. MXMail Exchange 45. Host Record
(forward): Hostname to IPA Address(IPv4) CNAME Alias 46. Reverse
Lookup
- (reverse): IP to Hostname
47. nslookup
- Default Server:dns.hinet.net
- Non-authoritative answer:
- Name:w2.rd.vip.tw1.yahoo.com
- Aliases:www.kimo.com.tw, rc.tpe.yahoo.com
48. nslookup( )
- Name:6.60-199-244.yam.com
49. nslookup( )
- > set q=mx ( mail server)
- Non-authoritative answer:
- yam.com.twMX preference = 1, mail exchanger =
ASPMX.L.GOOGLE.COM
- yam.com.twMX preference = 5, mail exchanger =
ALT1.ASPMX.L.GOOGLE.COM
- yam.com.twMX preference = 5, mail exchanger =
ALT2.ASPMX.L.GOOGLE.COM
- yam.com.twMX preference = 10, mail exchanger =
ASPMX2.GOOGLEMAIL.COM
- yam.com.twMX preference = 10, mail exchanger =
ASPMX3.GOOGLEMAIL.COM
- yam.com.twMX preference = 10, mail exchanger =
ASPMX4.GOOGLEMAIL.COM
- yam.com.twMX preference = 10, mail exchanger =
ASPMX5.GOOGLEMAIL.COM
50. nslookup( )
- Non-authoritative answer:
- yam.com.twnameserver = dns1.yam.com
- yam.com.twnameserver = dns2.yam.com
- dns1.yam.cominternet address = 60.199.244.5
- dns2.yam.cominternet address = 60.199.244.4
51. 52. DNS
- SPF (Sender Policy Framework)
- DNS RBL (DNS Realtime Black List)
- DDNS (Dynamic Domain Name Service )
53. S enderP olicyF ramework
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- http:// www.openspf.org/wizard.html
54. SPF
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- [email_address]==>twnic.net.tw TXT
55. DNS RBL
- RBLDNS Realtime Black List (dnsrbl)
56. RBL
- http://www.robtex.com/rbl/
57. RBL
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- > -bash-3.00# telnet mta-v1.mail.vip.cnb.yahoo.com 25
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- Trying 203.209.228.230...
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- Connected to mta-v1.mail.vip.cnb.yahoo.com.
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- Escape character is '^]'.
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- 421 4.7.0 [TS01] Messages from 118.69.211.98 temporarily
deferred due to user complaints - 4.16.55.1; see
http://postmaster.yahoo.com/421-ts01.html
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- Connection closed by foreign host.
58. DNS
59. DNS
- www.dyndns.org/www.no-ip.com
- Client/Server Server (hostname,id,passwd) DNS resource
records.
60. DNS Running ?
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- nslookup q=ns . Dns_server ( Root )
61. ShareTech MS
62. console
- RS-232 COM PORT 9600,n,8,1 MS#
63.
- press S or s key into safe mode S
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72. 73.
74. !! HA
75. !! HA
76. !! HA
77. !! HA
78. HA
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